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Post by kronnikracing on Dec 19, 2013 10:33:10 GMT -6
Maybe he wants to be able to hook up a secondary and belt? I wondered the same thing but i am sure Kevin has an explanation for it. Hes a pretty smart cat.
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Post by magnesium on Dec 19, 2013 12:45:57 GMT -6
I looked for HP ratings for a couple 250cc motorcycles, reed valve two stroke twins. 45hp on the Yamaha 250 which I think is 54x54. Just something for comparison, not to put pressure on you, Kevin. BTW, I started a Magnum yesterday with NO pipes on it, cats still scattered.
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Post by red19lite on Dec 19, 2013 17:19:32 GMT -6
I looked for HP ratings for a couple 250cc motorcycles, reed valve two stroke twins. 45hp on the Yamaha 250 which I think is 54x54. Just something for comparison, not to put pressure on you, Kevin. BTW, I started a Magnum yesterday with NO pipes on it, cats still scattered. heck all they got to do is smell two stroke and ther gone here  |
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Post by red19lite on Dec 19, 2013 17:26:18 GMT -6
also working on run in stand What is the point of the pillow block bearings and jackshaft on a run in stand? All you need is a fixed shaft for the dyno support. Also your dyno would work better if you got the dyno positioned so the drain was at the bottom (6 o'clock position). the 6 o,clock position makes sense, I have small engine,s for garden tractor pulling also was thinking of cogged belt drive to jackshaft and dyno, would have to build a jackshaft with tapered shaft for dyno that way I could dyno engines with different crank diameters of the small engines swiss knife dyno |
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Post by red19lite on Dec 19, 2013 22:44:39 GMT -6
Kevin have you found more than say 30 hp out of these yet? Im being serious. And im very interested. We dynoed our 250 probably 40 times and barely broke the 30 hp barrier. In stock form im talking. you going to have it ready for eagle? if you have trouble I have a rebuilt short block ready to go here its stock just bored and squared and resealed, kevin Attachment Deleted |
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Post by kronnikracing on Dec 20, 2013 7:53:11 GMT -6
Nope we had the crank checked for trueness and phase (our local machine guy cald and said its done as of yesterday) just to check that off the list of possible problems and that was almost dead on. Yes it will be ready for eagle easily, engine is ready to go back together but with christmas it will probably get put off until the 26th. Lots of time to test.
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Post by kronnikracing on Dec 20, 2013 8:58:35 GMT -6
That is one dang nice looking bottom end you have there tho! Hey and im talking about the motor  |
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Post by red19lite on Dec 22, 2013 14:40:48 GMT -6
also working on run in stand What is the point of the pillow block bearings and jackshaft on a run in stand? All you need is a fixed shaft for the dyno support. Also your dyno would work better if you got the dyno positioned so the drain was at the bottom (6 o'clock position). what happened to to rupp timmer , sounds like he might have some answers ,anybody know who he is? or just a chat board ghost |
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Post by red19lite on Dec 25, 2013 15:29:18 GMT -6
Tuesday just got the 250 triple exhaust sleeves all figured out, they will be made in Attachment Deleted a short run of six first week of January, 340 will be next with triple exhaust port, if everything gets worked out end of January one them would have liked to had them done already but ran into serveral road blocks getting them layed out |
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Post by Ruppsforever on Dec 26, 2013 22:15:18 GMT -6
Kevin , with sleeves that thick aren't you worried about piston seizures ?? Have you thought about having aluminum sleeves made ?? Just questioning whether the cylinders would expand enough before the pistons do. Or am I over thinking this ?? Which I tend to do.
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