timothyrshep
Newbie
I have a 10 hp briggs and am unsure what i should do about the clutch situation...
im thinking live rear axle...
any help would be awesome!
thanks
im thinking live rear axle...
any help would be awesome!
thanks
10 hp briggs: 1st timer: CLUTCH HELP?
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Kaptain Krunch
Pro Junk Collector
What are you going to be using it on? on/off road? If you have the money a comet 40 series TC is the way to go, in the long run its worth it.
http://www.gokartsupply.com/4044seri.htm
http://www.gokartsupply.com/4044seri.htm
anderkart
Moderator
Hey, I just went through major clutch search for a 10-h/p Honda motor I'm installing on my kart.
The first thing we'll need to know is what sized clutch shaft your engine has. I'm guessing its a 1" shaft but let us know for sure.
I've noticed some of the larger/older B/S engines have tapered shafts. (they get smaller towards the outer end than in the middle) Hopefully your engines output shaft is not tapered and is the more traditional 1" diameter from its very inside to its outer tip. (also let us know if your engines output shaft has a threaded bolt hole at the end or not, and if this is an off-road or pavement type kart)
Some of the less expensive 1" clutches only come with one gear choice, so It would also help us if we knew what circumference your karts rear tires are, your Axel sprockets tooth count and your desired top speed.
Once we know all this info, we can do a much better job of recommending some clutches for ya.
The first thing we'll need to know is what sized clutch shaft your engine has. I'm guessing its a 1" shaft but let us know for sure.
I've noticed some of the larger/older B/S engines have tapered shafts. (they get smaller towards the outer end than in the middle) Hopefully your engines output shaft is not tapered and is the more traditional 1" diameter from its very inside to its outer tip. (also let us know if your engines output shaft has a threaded bolt hole at the end or not, and if this is an off-road or pavement type kart)
Some of the less expensive 1" clutches only come with one gear choice, so It would also help us if we knew what circumference your karts rear tires are, your Axel sprockets tooth count and your desired top speed.
Once we know all this info, we can do a much better job of recommending some clutches for ya.
timothyrshep
Newbie
road kart for sure. it's a 1" shaft (... can lathe it though... if thats ok to do...) its not a tapered shaft. No threaded hole at the end, but it does have a key slot.
rear tires are 11" diameter
and i have not set up my axle at all...
im acquiring parts and pieces... starting from scratch, just welded my frame and attached spindles and steering.
thank you sooo much!
rear tires are 11" diameter
and i have not set up my axle at all...
im acquiring parts and pieces... starting from scratch, just welded my frame and attached spindles and steering.
thank you sooo much!
thgrahamjr
Love To Build!
How about some pictures of your creation so far?
anderkart
Moderator
The least expensive 1" clutches I found ($69 Comet) needs a threaded eingine shaft.
Here's one I almost bought myself:http://cgi.ebay.com/Racing-Go-Kart-...ryZ40152QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
This clutches 14-tooth gear is for the large #40/41 chain size... Those are big strong chains but I've noticed it seems to be allot easier to find rear sprockets (in most any tooth count) for the #35 chain-size thats much more commonly used on karts...
There's some nicer 1" (set screw type) race clutches avalible in the $150-$200 range
You'll find a few 1" clutch models/info at this site:
http://www.noramclutch.com/
Before you deside on your clutch, you should really figure out what gear ratio/top speed you want to achieve so you'll get the right gear tooth count for your situation. You should run some gearing combinations at this link to get an idea of your potental top speeds: http://www.gokartracing.org/Calculate.htm (just remember, more top speed = less acceleration...)
I figured my older flathead 10-h/p (w/governor disconnected/pipe and carb change) wasnt going to turn much over 5000 rpm, I'd think your (stock?) eingine is probably going to be somewhere around the same max RPM.
I ended up going with an 18 tooth Noram Star clutch (requires a threaded shaft) . For now, Ive instaled a 65 tooth rear sprocket.
You'll find serveral diferent 1" clutches for sale/info in this search link:
http://www.google.com/search?source...&rlz=1T4DMUS_enUS221US222&q=1"+go+kart+Clutch
(just make sure they're the set screw type)
Most all the 1" clutches you'll find are probably fairly good quality. You'll notice allot of the less expensive 1" clutch models are only rated for use on up to 8 h/p engines. Theres been quite a few guys here reporting these models did just fine on 10-h/p+ motors as long as your gear ratio is fairly reasonable. (Gear ratios for less top speed = less stress on the clutch)
Here's one I almost bought myself:http://cgi.ebay.com/Racing-Go-Kart-...ryZ40152QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
This clutches 14-tooth gear is for the large #40/41 chain size... Those are big strong chains but I've noticed it seems to be allot easier to find rear sprockets (in most any tooth count) for the #35 chain-size thats much more commonly used on karts...
There's some nicer 1" (set screw type) race clutches avalible in the $150-$200 range
You'll find a few 1" clutch models/info at this site:
http://www.noramclutch.com/
Before you deside on your clutch, you should really figure out what gear ratio/top speed you want to achieve so you'll get the right gear tooth count for your situation. You should run some gearing combinations at this link to get an idea of your potental top speeds: http://www.gokartracing.org/Calculate.htm (just remember, more top speed = less acceleration...)
I figured my older flathead 10-h/p (w/governor disconnected/pipe and carb change) wasnt going to turn much over 5000 rpm, I'd think your (stock?) eingine is probably going to be somewhere around the same max RPM.
I ended up going with an 18 tooth Noram Star clutch (requires a threaded shaft) . For now, Ive instaled a 65 tooth rear sprocket.
You'll find serveral diferent 1" clutches for sale/info in this search link:
http://www.google.com/search?source...&rlz=1T4DMUS_enUS221US222&q=1"+go+kart+Clutch
(just make sure they're the set screw type)
Most all the 1" clutches you'll find are probably fairly good quality. You'll notice allot of the less expensive 1" clutch models are only rated for use on up to 8 h/p engines. Theres been quite a few guys here reporting these models did just fine on 10-h/p+ motors as long as your gear ratio is fairly reasonable. (Gear ratios for less top speed = less stress on the clutch)
anderkart
Moderator
Hey Tim, did ya deside on your clutch yet?
timothyrshep
Newbie
not really... im confused about what exactly a torque converter does... if i use a torque converter willl i be able to regulate a wider range of speed with less RPM range?
timothyrshep
Newbie
o yea, and im trying to figure out how to downsize pics on my mac so i can post them. hopefully i will figure that out soon
PeterWabbit
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Kaptain Krunch
Pro Junk Collector
Thread highjack...
Heres a diagram of how a torque converter works. Its basically a automatic transmission.
Thats kind of a bad one but whats going on is that the clutch on the engine gets narrower as the RPM increases, the clutch on the jackshaft opens up more, so that it is constantly changing gear ratios.
Heres a diagram of how a torque converter works. Its basically a automatic transmission.
Thats kind of a bad one but whats going on is that the clutch on the engine gets narrower as the RPM increases, the clutch on the jackshaft opens up more, so that it is constantly changing gear ratios.
anderkart
Moderator
Yeah you probably would, The torque converters start out at a numerically higher gear ratio, so you should be able to use a smaller axle gear for more overall top speed while still having fairly good acceleration.
I've only been into karting for a short time but I learned allot about 1" clutches vs.Torque converters by reading through the threads in this (DIY go kart forum) search link:
http://www.diygokarts.com/vb/search.php?searchid=60610
The easiest/best way (I've found) to post pics on forums is by using off-site photo hosting. If you sigh up here: http://photobucket.com/ (Its easy/free) you usually dont have to re-size your pics at all. You simply just copy and paste the photos Image link right onto your post. If you need any more help with posting pics just send me a pm.
ps:
Here's a thread about posting pics on this forum: http://www.diygokarts.com/vb/showthread.php?t=735
timothyrshep
Newbie
so another stupid question, but as i delve into the whole go kart thing more and more now... (which btw, i will put some picks up today!) i hear people talking about "slo-mo"... is a torque converter a "slo-mo?"
anderkart
Moderator
I think torque converters are a better choice for off road (or very heavy) type karts and Centrifugal clutches are probably a beter option for most lighter weight on-road / race karts.
timothyrshep
Newbie
some pics of the kart so far
sorry it took me so long...
sorry it took me so long...
Attachments
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IMGP2952-1.jpg -
IMGP2958-1.jpg
anderkart
Moderator
Yeah, I'd get a Centrifugal clutch for that kart.
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