I'll be your guinnea pig....I've decided to give the 30 tooth sprocket a shot. I spoke to a gent out in California who has installed several of these (not EVO industries, he makes his own) and he assured me that there are no long term effects from removing the compensator. He advised that he hasn't noticed any of the surges that the compensator was designed to minimize with his sprocket installed, especially with the IDS installed. He also said that he saw an increase of 6-7 hp at the rear wheel on the dyno. So, in short, I should be getting one next week and will post up the results. Of course the only issue is that I'm only going to dyno the bike once and since I don't know the gains from the cams I just dropped in I won't be able to confirm any gain from the 30 tooth. I won't be able to test ride it for quite awhile either with the damn weather not cooperating. Now to decide who to buy from ($55 difference in price)[8D]

 

Just an FYI Dawg, you can accomplish the same buy installing the 30 tooth Trans sprocket from Andrews this way you keep your compensator. Severalguys at V-TwinForum ended up removing the 30 tooth primary due to vibration issues. The 30 tooth trans sprocket is a littlemore expensive because you have to change the belt but I have it and it works GREAT! Well worth it, really makes this trans useable. Good luck which ever way you go.

 

Would you guys care to give a few more details? I read someone else talking about changing sprockets but they were talking about going to a 60 tooth. I am assuming the 60 was the rear sprocket and would do away with my IDS and the 30 would be the front drive sprocket and would let me keep the IDS. Would these two options provide the same benefit or am I just totally confused?

 

HD used a 34 tooth sprocket and a 94 pin chain. By changing to a 30 tooth and a 92 pin chain it gives you more off the line and makes 6th gear a little more useful for around town. It does raise the RPMs a little, but changes the gear ratio. You can accomplish this by changing out the compensator for a 34 tooth and new chain, or as stated above changing out the tranny sprocket to a 30 tooth and putting on a new belt.

 

I think I understand. By your talking about a new chain, you must be reffering to the inner drive that is behind the side cover which turns the outer belt. I thought they were talking about changing the outer drive sprockets that is belt driven.

Thanks, I will be looking for your feed back.

 

I will try. Behind the side cover (the primary cover)the crankshaft turns the 34 tooth compensator sprocket which uses the 94 pin primary chain to turn the clutch basket which turns the 32 toothtrans pully (gear)which isactually behind (inboard from) the primary. This trans pully turns the final drive belt that turns the rear wheel and is regulated by the transmission. Lowering these ratios either by using a smaller comp gear or a smaller drive pully, lowers the gearing and makes the newer 6 speed transmission much more useable. I know if you've never taken one apart, it can be a little difficult to wrap your brain around but once you've seen andpulled one apart, it's a simple straight forward arrangment. I am not a wrench by any means and have only a couple of these taken apart but I think I got it right so that you should understand it. Aren't these forums great?!

 

Very well explained Adlerx.

 

I am now on board and understand. I am or was familiar with the concept of lowering your gear ratio. Which in turn will raise your rpms at the same speed. I just wasn't sure which sprocket was being changed. This sounds like something I may be interested in doing as well. I will be watching for the updates.

Thanks for the info....

 

Way to go Dawg ! Woohoo, knew someone would eventually bite!

Really I am just inches away from pulling the trigger myself, but have been waiting for someone to try it that could really give me good input. Plus, with all the power of this new engine, not sure if Iwill be able to handle it off the line. j/k

You mentioned another manufacturer, I have not seen anyone other than EVO Industries with them for sale. The other guy, does he sell retail or only make one-off parts?

Only down side is that your weather is actually worse than where I live, if that is possible[:@]so you wont be riding it soon. I had hoped for an educated evaluation prior to spring. Maybe you can get out there and ride it in the snow?

Keep me informed!

Monkish:
The 07-08 FLH's have a 34 - 46 tooth primary and a 32 tooth transmission, 66 tooth rear wheel sprocket for aratio of 2.79.

Going to a 32 tooth engine sprocket changes theratio to 2.96, a 30 tooth engine sprocket changes theratio to 3.16. You do have to change the primary chain as it is shorter.

I would prefer to go to a 32 tooth sprocket but 34 to 30 makes the primary chain one link shorter, 34 to 32 would be a half a link which is not possible so that is why there are 30 tooth only available. I prefer to change the engine sprocket, much simpler than changing the tranny pully and belt, plus changing the tranny pulley will require recalibration of the speedometer, changing the engine sprocket doesn't. In either case, you dont have to fiddle with the rear wheel pulley or IDS if you have it installed.

 

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