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Author Topic: re-skinning a conga  (Read 3224 times)
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bongo
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« on: March 15, 2005, 09:26 AM »

Brought home a new conga skin from African Rhythm Traders, nice $22 Pakistan cow hide, medium thin, brown and white patterned, the skin has character.  It was oversized, 26 inch in diameter, plenty of room for my 9 ¾” Gon Bop quinto. I have found it pays to use a larger skin, makes it easier.

This is only the third drum I have skinned in my life and I’m no expert. In the past I have sweated bullets, cursed and cried. This time I proceeded hopefully into the project … but it proved to take hours.

I have come to the conclusion there are two diabolically opposed actions in skinning a conga drum: The one where you pull the skin up to make it tight around the ring, the other where you pull the skin down to give room between the bearing edge and drum rim. To solve this I used a carpet needle and heavy thread to sew the ring in place. This held it down while I used pliers to pull the slack out from around the ring. I pulled the thread out later like a doctor does with sutures from a wound.

Another problem was I took the head off after it had dried for a day. My thinking was it would dry faster off the drum, but when I took it off I had to tap it with a hammer, it did not want to come off the shell. I should have taken that as a warning sign, cause then it did not want to go back on, it had shrunk. I had to soak it again to get it back on the drum. I’m now leaving it on the drum to completely dry.

Does anyone know how the pros do it at the manufacturing shops? Do they have a machine??
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SheldonWhite
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« Reply #1 on: March 15, 2005, 11:27 AM »

Does anyone know how the pros do it at the manufacturing shops? Do they have a machine??

No, they just have a lot of practice. I watched Akbar (Sol Percussion) reskin one of my old GonBops. He was done in 30 minutes (including bending and welding a new hoop). He said that when he worked at Valje, they used to race each other to see who could finish a head first.
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bongo
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« Reply #2 on: March 15, 2005, 01:56 PM »

Sheldon,
Could you give more detail on what you saw Akbar do?
bongo
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SheldonWhite
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« Reply #3 on: March 15, 2005, 03:12 PM »

Oh man, it was years ago.
He had soaked the skin ahead of time.
By far the hardest part is getting the skin around the ring, then back up through the tensioning rim (as you doubtless know). I remember him pushing the ring down over the head while it was resting on top of the drum, then using a his hands to pull the head up through the rim. Once it was through all the way around, he used pliers to  work his way around the circumference and make sure the head sat evenly on the ring with no wrinkles. He kept tweaking and pulling with the pliers to make sure it was tensioned evenly and firmly, getting the ring snug up against the bottom of the rim.
He then tensioned the head up part way, till it was *a little* tight but *not close to* playing-tight. He then cut the excess material off the head, using the top of the rim as a guide, being *very careful* not to nick the inner layer of the head that sits on the drum.
It was clear that he had done this job many, many times. I don't really remember any special tricks he used. Once he had the skin back up through the rim, he attached the tensioning screws to keep the rim in it's basic position while he started to tension it into it's final position..

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B-cero
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« Reply #4 on: March 15, 2005, 03:18 PM »

So Bongo it sounds like you eventually got the skin mounted properly? I've had my best results when the skin was closer in dia. to the drum I've found too much extra gets in the way. So for a 10" drum I would use a 16" skin. Needle nose plyers are a must. It can be a wrestling match, and Gon bops can be hard with thick skin as the tolerences are so close.  I've wondered how the large factories mount their skins.
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windhorse
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« Reply #5 on: March 15, 2005, 06:57 PM »

We have done about four different heads in our Afro-Cuban group, at least when I was around.. And it's always a group project. The guy who's putting on the head will bring his soaked heads and freshly sanded shell, and we all get involved to help out. With enough hands, you can just stick the hoop down on the head, and several guys pull the excess through the hoop, and phoop.. push it down straight, with a few folks holding it still, while everyone else rushes to get the bolts back on..
We use several sets of pliers to get the wrinkles out around the edges, and pruning sheers to cut the excess around the rim after mounting.
NEVER take the head off while it's drying!
It generally takes us about 30 minutes from beginning to end - but that's because it's a group project...
If you've got musician friends,, you'll be surprised at how they don't mind helping out! Just ask 'em!
The best part is when they bring it back next week and everyone plays the newly skinned drum!  Cheesy
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bongo
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« Reply #6 on: March 16, 2005, 09:45 AM »

So Bongo it sounds like you eventually got the skin mounted properly?

Yes, it is looking good, but still drying. It has been a couple of days, but I can see the skin is still thick with moisture, it was thinner before I soaked it. I suppose the skin thickness will be a gauge of when it is completely dried and has reached it final playing tone quality.

Something that I found that helped is I 'extend' the hook length by using loops of rope to pull/hold the crown (rim) down. Before you have pulled the excess wrinkles out from around the ring, the excess skin interfers with the hooks from reaching the crown, so the loops of rope help to hold the crown down while you pull up with the pilers. Once you got the excess skin out of the way, the hooks can fit normally.




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OldGuyAl
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« Reply #7 on: March 16, 2005, 10:32 AM »

This thread is very interesting and frightening to me!

I'm about to try it for my first time and I don't think I'm going to have anybody around to help me.  I really, really do NOT want to do this but as I have documented in other threads, I'm just having a devil of a time trying to get a new head for my quinto.  I think it has finally come down to this and I am about 99% certain that I'm going to screw it up somehow.  

Does anybody know of a web site with photos and tips on doing this?
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B-cero
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« Reply #8 on: March 16, 2005, 01:26 PM »

You really have to start with a positive attitude, to mount a new skin is to become 'intimate' with your drum.  L.P. drums are easier as there is plenty of room between the hoop and drum body. I think rhythmweb has a description of the process. Let the head dry for at least 1 week after you mount it , even if it seems dry. I think the fat conga site has a good picture of a guy pulling the skin with plyers.  also for future reference Bauer 11" heads fit L.P. 11" and to my taste they are the best premounted cowskins though expensive.  (available from espirito drums). best of luck.
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Fed
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« Reply #9 on: March 16, 2005, 03:00 PM »

... nice $22 Pakistan cow hide, medium thin, brown and white patterned, the skin has character.  It was oversized, 26 inch in diameter

they have it listed for $40 on their web site ... what's up with that?  Shocked
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Fed
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« Reply #10 on: March 16, 2005, 03:07 PM »

check this link for reskining conga
http://www.volcanopercussion.com/html/tucking_skins.html
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windhorse
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« Reply #11 on: March 16, 2005, 09:43 PM »


What a great post!!! This link is definitely the ticket!!

Dave
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Hollow a log into a drum.
It's the space inside that makes the sound.

bongo
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« Reply #12 on: March 18, 2005, 09:21 AM »

they have it listed for $40 on their web site ... what's up with that?  Shocked

Guess I got the discount price.  Smiley
The website lists discount pricing for quanity buyers, but even though I only bought two, the fellow gave me a break.

My head is still drying, it looks dry and feels dry, but I see the edges are still thick, which must mean they still have moisture. I am going to give it a while more before I crank it down, it is only 5 days since I re-wetted and re-set the skin after prematurely pulling it off the drum.

I checked the website out at vocanopercussion.com. There is nothing better than pictures and I think it shows the skinning process well. Couple of steps in there though that may give you more trouble than they make out.
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Fed
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« Reply #13 on: March 21, 2005, 10:35 AM »

Well, I desided to change my skins also. I have 2 LP Aspire drums, so I am not quet sure if the change was warranted.
The main reason I decided to do it is because I had a lesson with a local conga player and he said that my drums are fine but I should change the heads.  So, I'll be "soaking" sometime this week also...  Grin
I hope I am "blown away" by the sound after am done ... Giovani look out...  Shocked Grin
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Fed
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« Reply #14 on: March 24, 2005, 08:19 AM »

Hey there "skin changing amigos" here is another link for changing heads:
http://www.rhythmweb.com/head.htm

And I have a question.... In the steps I copied bellow... they assemble hoops and skin on the flat surface... Do you think it's better then doing it on the drum... or is it not much difference? I can try flat surface first I guess... just wanted to see if you guys see any potential problems.  

2. Lay the skin on a flat surface, and place the center wire atop the skin.
3. Gather the skin around the skin wire, and place the counterhoop (the rim) atop, as in the second image..fix the head so as to come up inside the counterhoop.
4. Once the skin is tucked in all the way around, place the assembly of skin, skin wire, and counterhoop over the drum. Attach the lugs. Check for evenness.


Hey bongo, did your skin dry, how does it sound?

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bongo
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« Reply #15 on: March 25, 2005, 12:24 AM »

Fed
I'm not happy with the new skin, it sounds dull. The tone is muffled, no volume, not crisp and dry.

I took it off tonight and put my old 28 year old head back on, which seemed to come alive at getting another chance. That old head really does have a good sound.

The new head I think is still heavy with water. The edges look thick and the whole thing just feels heavy and damp, even though it has been a week and a half since I skinned it and it has been over a heating vent a lot of the time. I'll give it more time to dry and try it again later.
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windhorse
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« Reply #16 on: March 25, 2005, 09:03 AM »

And I have a question.... In the steps I copied bellow... they assemble hoops and skin on the flat surface... Do you think it's better then doing it on the drum... or is it not much difference? I can try flat surface first I guess... just wanted to see if you guys see any potential problems.  

2. Lay the skin on a flat surface, and place the center wire atop the skin.
3. Gather the skin around the skin wire, and place the counterhoop (the rim) atop, as in the second image..fix the head so as to come up inside the counterhoop.
4. Once the skin is tucked in all the way around, place the assembly of skin, skin wire, and counterhoop over the drum. Attach the lugs. Check for evenness.

You should assemble it right on the drum. I think maybe they left out a small explanation there that you want the ring to be centered. So, obviously you want to first place the ring in the middle to eye the center (perhaps on a flat surface),, but then, put it on the drum.
It will wrestle itself lose, if you try to wrap the leather around the ring off of the drum.
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Hollow a log into a drum.
It's the space inside that makes the sound.

OldGuyAl
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« Reply #17 on: March 25, 2005, 12:32 PM »

OK, my skin is on the way and this experience by Bongo is making me more apprehensive because I cannot be without a playable quinto for more than a week - especially right now as both my bands have pretty busy rehearsal and gig schedules.  I'm beginning to think that this is not the way for me to go with this.   I started off just wanting a better sounding head and now I'm worried I'm going to have to buy another quinto to play while I struggle with rolling-my-own.  

Think I should just put the new skin and ring in the closet until I have 2 weeks to be without a quinto?
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Fed
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« Reply #18 on: March 25, 2005, 12:57 PM »

OldGuyAl,  I think that part of bongo problem is that he oversoaked the skins, and as he said it's not dry yet. See part of instructions bellow. I don't know for sure but just a thought.  I am waiting for my skins from Isaac too but I mostly play at home so I don't have same situation as you.  

I wish bongo's report was more reassuring though...  Shocked Tongue I still can't wait to try it.... at least I know now that I won't be ready with new skins for next week recording, I guess old ones will have to do.

Bongo, thanks for your feedback, I hope you have better expirience when/if you try it agan.

"1. Soak the skin in lukewarm water, until pliable, but not long enough to let it get thick and flabby. (Around 2 hours for a bongo skin and up to 8 hours for a thick conga skin)"
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B-cero
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« Reply #19 on: March 25, 2005, 07:25 PM »

It takes a couple months of breaking in time for a new skin to find its' sound.  It needs to be stretched slowly, you tune it, then it stretches, so you tune again, more stretch then eventually it sounds right.
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