32 Tooth Sprocket on an '07 Ultra/Hannigan Conversion

After going on a trip to Glacier Park 2-up pulling a trailer a couple of weeks ago, I know I need to change the sprocket to a 30 tooth from a 32 tooth. Trying to get going on a steep incline, loaded like that was pretty tough sometimes especially when hot.
I've asked Hannigan directly if there is enough adjustability to compensate for the change in their conversion but they are not sure. Do any of you know; can the sprocket be changed without changing to a smaller belt with the Hannigan conversion? I’ll need to have a Harley shop do this so I want to make sure before it’s on the rack.


Also, I have seriously considered changing from a 103 engine to the 120R in September. If I did that would I even need to change the gearing? Or...should I do both? It runs pretty good with just me, but is seems underpowered on inclines with a trailer and passenger. My current engine has been dynoed at 103hp and 107 tq, and has a HD 251 cam. That configuration worked really great as a 2 wheeler.

Thanks for your help!

Keith

[QUOTE=3rdwheel;242309]After going on a trip to Glacier Park 2-up pulling a trailer a couple of weeks ago, I know I need to change the sprocket to a 30 tooth from a 32 tooth. Trying to get going on a steep incline, loaded like that was pretty tough sometimes especially when hot.
I've asked Hannigan directly if there is enough adjustability to compensate for the change in their conversion but they are not sure. Do any of you know; can the sprocket be changed without changing to a smaller belt with the Hannigan conversion? I’ll need to have a Harley shop do this so I want to make sure before it’s on the rack.


Also, I have seriously considered changing from a 103 engine to the 120R in September. If I did that would I even need to change the gearing? Or...should I do both? It runs pretty good with just me, but is seems underpowered on inclines with a trailer and passenger. My current engine has been dynoed at 103hp and 107 tq, and has a HD 251 cam. That configuration worked really great as a 2 wheeler.

Thanks for your help!

Keith[/QUOTE]

Keith Those are great numbers you all ready have. At what RPM does the torque come in?

Sounds to me your Cam MIGHT be bringing the torque in at to high an RPM.

I run a 110 motor in my TG and changed from the 30 to the 32. My torque of 105 starts coming in strong at 2100 RPM and peaks at the low 3000 RPM area.

Then just drops slightly well into the 4000+ range. I personally like it much better geared with the 32.

If you seriously are going the 120 route I would suggest waiting on the gear change. Just my opinion its really depends on how you like to ride.

Gorilla makes a very good point. Do you still have the print out from your dyno test? It should give you a graph of where your torque peaks and at what level it sustains before it starts to fall off and when. It may be that you just need to change your shifting habits to keep your torque more in the power band.

Yes, I just looked at the dyno sheet. It's kind if hard to interpret but if I read it right, the tq at 2,500 rpm is about 90 and peaks at 109 at 4,000 rpm.
Does that seem right for trike purposes? Maybe I just expect too much and just need to shift more.
Most of my riding is single and without a trailer, but we are planning some more trips.

Thanks again, Keith

Keith, I had to relearn my shifting habits with the trike. When we ride two-up, it's happiest from 2700-4000 RPM. I suggest you try changing your shift points and see if that takes care of your power issue.

[QUOTE=3rdwheel;242309]After going on a trip to Glacier Park 2-up pulling a trailer a couple of weeks ago, I know I need to change the sprocket to a 30 tooth from a 32 tooth. Trying to get going on a steep incline, loaded like that was pretty tough sometimes especially when hot.
I've asked Hannigan directly if there is enough adjustability to compensate for the change in their conversion but they are not sure. Do any of you know; can the sprocket be changed without changing to a smaller belt with the Hannigan conversion? I’ll need to have a Harley shop do this so I want to make sure before it’s on the rack.


Also, I have seriously considered changing from a 103 engine to the 120R in September. If I did that would I even need to change the gearing? Or...should I do both? It runs pretty good with just me, but is seems underpowered on inclines with a trailer and passenger. My current engine has been dynoed at 103hp and 107 tq, and has a HD 251 cam. That configuration worked really great as a 2 wheeler.

Thanks for your help!

Keith[/QUOTE]

Look for the Evolution Industries sprocket and chain change in the primary. Small price compared to big results gained.

It takes maybe 1-2 hours to change.

Well I have built 3 trikes and changed the front pulley from the 32 to the Andrews 30t. Maybe if I already had the floorboards off, and the outer cover off and oil drained. I did a lot of extra work while I was tearing it apart. Have to remove the compensator, chain tensioner, clutch basket. Then inner primary just to get to that front pulley. And that large locking nut on transmission input shaft is a bear. I also was changing the drive belt so that requires more dis-assembly around the rear wheel and axle.
Power wise, I did loose some top end, now running on hways about 80-85 mph has it wound up, but in town and mountain roads does not require constant shifting. Well worth the swap for my style of riding.

This may not even come close to applying on a trike but on my 07 bike if I don't keep the rpms above 2k she starts to lug. I've actually gone to 2k as my shift rpm for down and above 3k for up. So how does that compare to your triked 07?

I did have the 30 tooth Andrews sprocket installed along with a new belt. At the same time I had the compensator upgraded and an oil cooler installed. After riding it, I noticed it started from a dead stop much better, and had more punch overall; but like you say the top speed suffered - even though I don't ride there too much.
I still "wanted a little more" (don't we all?) so I decided to upgrade the engine. After much deliberation between a 107, 113, 117 and a crate 120, I decided to go the 113 route. The shop had just completed a Softail engine build with the 113, and got 131 tq and 100 hp after a dyno so that build is what I chose. I did have the crank welded since I had already had one fail on me before. I had the new CNC heads installed as well. The cases came back last week from being bored out so I am hoping that this week I'll get the call to come pick it up. Unfortunately, the width of the Hannigan won't fit on their dyno machine.

I am eagerly looking forward to a "riding everywhere" summer.

Two trips are already planned, one to Walla Walla for July 4th, and one to Banff and Jasper.

I got my Hannigan trike back a few days ago and the culmination of the 113 ci upgrade they just completed, the 30 tooth sprocket change, H-D MVA heads, compression releases, upgraded clutch, upgraded oil pump, Speed-O-Healer, Wards fans, cams, and a new Dunlop D402 140 tire up front is just AWESOME! I really give a lot of credit to the Smokey Point H-D shop – you don’t hear that often on this forum, but they did everything just right the first time. It’s so nice to finally have everything working as it should after having been through some previous challenges.

The integrated iPod unit works like it is supposed to, the fans come on when they are supposed to, and the GPS speed and the speedometer are within 1 mph different from each other. Best of all, the power band and pulling power is just perfect for a trike. There is just so much “willing throttle” waiting now, and cruising in 6[SUP]th[/SUP] gear at 3,000 rpm is exactly 70 mph. No need to shift down, just twist and go. Even riding in town there is a big difference with so much torque, below 2,000 it still pulls strong without a downshift. The first time I pulled in the clutch lever I thought they forgot to hook it up it was so easy to pull – it was just the variable pressure clutch difference, and that made it so smooth.

Oh yeah, the first tank of gas got me 34 mpg but I am riding it under 3,500 rpm until it’s fully broken in.

I am really happy with how this rides, looks, sounds, and feels.

I think there are no other upgrades on my list; that feels weird!

It feels like a whole new trike – and I guess really it is huh?