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Old 06-15-2019, 02:36 AM
Duceduce Duceduce is offline
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Default Anyone else have a manco Duce ?

Just seeing if anyone out there has done any heavy modifications to theirs
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Old 06-15-2019, 04:54 AM
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I don't think so..
but a DEUCE some may have

which one do you call your own? 612?

'sid

PS duce btw was the self given nickname for a small grown overweight italian 455hole ~90 years ago
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Old 06-15-2019, 12:25 PM
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It came with a 13 hp Honda but I have a ninja 900 going in it but I need to rearrange the back end for independent rear suspension.. and to hold the motor on the frame instead of the way it is now and I call mine duce and now I know why... because it’s way overweight.. haha
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Old 06-15-2019, 02:01 PM
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You're going to want to do a lot more than just redoing the rear end for that engine. Little too much engine for something that wasn't built for that. A 250 would be better. But a V-twin briggs, Honda are the better choices. Most heavily modified deuces are built by Scot Dunlap, Deuce Man. However hes not a member on here or any forum that I know of. Only heard about him through Red Beard's Garage when they went to Windrock a year ago with him.
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Old 06-15-2019, 07:17 PM
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I had a couple of them a long time ago. That is a lot of engine for that......you are going to need a pretty serious rear end setup to hold up. Most guys running engines like those use the edge racing setup in the rear but it's pretty pricey. They usually mount them on an edge racing frame also. You would need something similar to hold up to that kind of power. Kartorbust is right a vtwin would go right on but you wouldn't get a lot of top speed just a boatload of torque. Are you riding in the sand? Why the need for that engine? Doing any kind of trail riding your not going to want to be shifting. What were you planning on doing for the independent suspension?
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Old 06-16-2019, 07:07 PM
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The motor i already have.. (might trade it for a 660rr) and the entire frame is going to be braced and extended. I’ve never looked into premise rearends I was just going to make my own rear ended .... I’ll post some pictures when I get started on the rear. But so far the front suspension mod was a complete success compared to what they came with !
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Old 06-16-2019, 09:24 PM
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So what are you going to use for axles? What is a 660rr? Never heard of that.
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Old 06-16-2019, 09:28 PM
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Quote:
Originally Posted by 420Racer View Post
So what are you going to use for axles? What is a 660rr? Never heard of that.
It's a Honda CBR660RR, meaning race replica. Has somewhere between 100 and 107hp at the rear wheel.
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Old 06-17-2019, 01:24 AM
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ya axle I have no idea yet I知 still in the design stage but I知 going to build the rear end as a subframe any tips on design?
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Old 06-17-2019, 05:36 AM
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Ok sounded like a Honda just never saw a 660. Take a look at the edge products stuff from Australia maybe that will give you some ideas.
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Old 06-17-2019, 12:21 PM
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I agree. Rather than trying to reengineer the wheel, and get plans from somewhere reputable. The Edge Products and Badland Buggy. From Badland the ST2 LT seems to be pretty decent.
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Old 06-24-2019, 02:25 AM
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Well I scrapped the street bikemotor idea and am now going with a 2 stroke 700 twin from my old sled I値l post some pictures when I get to putting it together !
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Old 06-26-2019, 03:07 AM
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Well the motor is ready for a test fit but I think I知 going to have to do some modifications to the sub frame and extend it away from the body so the exhaust didn稚 melt the seats but it looks sweet on there !! One more week and I値l have the first test run!
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Old 06-26-2019, 07:20 AM
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So one thing I've seen talked about on forums where people use snowmobile engines on buggies is, the gearing should be about 8:1 from the CVT to the axle, or deeper. Sleds are usually geared around 3:1. You're also going to want to re-jet the carburetors for the summer. If you don't, you'll end up melting the pistons.

Hopefully this jeting chart helps out.
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Old 06-26-2019, 11:33 AM
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Ya I知 definitely going to rejet it and make sure it痴 running right for the temperature but as far as the gearing I知 kinda thinking of making a jackshaft from cvt to the gearbox so I can play with a few different setups because the gearbox is already geared down. 50 series chain should be good enough to hold up hey? Only thing I知 worried about it the chain coming off at 7-8k rpm and coming threw the seats
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Old 06-26-2019, 11:35 AM
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Put up a sheet metal barrier behind the seats and that should help from a chain snapping at high speeds. I would use whatever chain the sled used and get one that will fit for your needs.
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Old 06-27-2019, 02:12 AM
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Ya the only reason I知 not using the chain from the sled, is that I want the chain to be a weak spot. so that the gearbox will hopefully not see any damage. Chain is way cheaper then the gearbox! I知 a little stuck on how to reattach the rear end. I don稚 want to use the single point that was originally on it.
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Old 06-27-2019, 06:41 AM
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Are you talking about the gearbox that goes with the engine? In which case it will probably be fine. To use the chain as the weak spot will not really happen. Unless you change the pitch of the chain, it'll be the same strength approximately.
Besides, then you'll be massively frustrated because you'll either be breaking chains, or throwing them very often. My kart was there at one point, anf it was not fun to keep putting the chain back on.
Besides, what in the world are you planning to do to that poor gearbox that you are worried will damage it? Are you doing the Paris-Dakar Rally or something? I wouldn't worry about it.
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Old 06-27-2019, 10:17 AM
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What gearbox?? that has a CVT....????
And it would have still have had a chain....

???
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Old 06-27-2019, 10:19 AM
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He means it's easier to replace/fix the chain than the gearbox.
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