Healtech Speedohealer Assistance
- Thread starter CHADAWAY
- Start date
Post your rear tire size and front and rear sprocket sizes here and I'll tell you what number to put into the Speedohealer, from the chart on their website.
You do have it plugged into the harness and have power to it; correct?
Or do you not know where to connect it?
You do have it plugged into the harness and have power to it; correct?
Or do you not know where to connect it?
I haven’t installed it yet. After reading the instructions I put it aside until I had more time to sit and do it. Rear tire is 300/35R18. Currently it has a 17 tooth front sprocket and a 47 tooth rear. Aside from the speed being off I think it’s not where it should be as far as how it performs. In 6th gear cruising it seems like it wants another gear. It’ll still take off when I hit the throttle but cruising next to my buddy on his Harley it just seems like it’s wanting to shift to “go in OD” and bring the rpms down. Could just be me since this is the first busa I’ve had.
If you’ve got input on where to connect the healer that’d definitely speed up the process when I do
Remove the left/foot shifter side, side fairing.
There will be a white plug in the main harness, near the engine block.
The Speedohealer plugs inline there.
Unplug that white plug in the harness, and plug one side of the Speedohealer into each.
There should also be another inline connector near the battery for power to the Speedohealer, or a red wire that goes to a fused 12volt power source.
I'll have to look at mine later to see which it is, as I cannot remember which one it is exactly.
But, it is very simple to install, and you can mount it where ever you want, alot of people mount them in the tail, under the passenger seat, or behind the battery box, under the driver's seat.
On Heal-Tech's website you simply select your bike, then your tire and sprocket sizes, which gives you a number, say 11.2 for example, and then you enter that number into the SpeedoHealer with a few button presses, and the instructions that come with the SpeedoHealer, and the website will tell you how to do that, which is also very simple.
Once done, check the bike's speedometer vs gps, and the speedometer should be within -1/+1 mph of what the gps says.
Given your rear tire's height, that 17/40 is stock gearing, that the overall height of a 300/35/18 is roughly and inch and a half taller than the stock 190/50/17 your gearing of 17/47 should be close to 17/44 or 17/43 with a stock tire.
17/43 is ok for highway riding too, as rpm's are only about 600 higher than 17/40.
A loud exhaust and not being used to the engine, which will be cruising around 60-65mph at the rpm's where it really wants to start making power, it can be deceptive that it feels like it's running close to redline...yet it will run very strong to past 10k rpm as it was designed.
The extra low gearing that you have is not only to account for a taller tire, to help even things out(taller tires lower your rpm's at the same speed) which would make the bike sluggish with a normal width tire that height, but in your case to overcome the extra weight of a much heavier rear wheel, and a heavier rear tire.
Which is also not dead weight, but rotating mass, as the engine has to work harder to get that heavier rear wheel and tire to the same rpm, with the speed at that rpm dependent on the gearing.
There will be a white plug in the main harness, near the engine block.
The Speedohealer plugs inline there.
Unplug that white plug in the harness, and plug one side of the Speedohealer into each.
There should also be another inline connector near the battery for power to the Speedohealer, or a red wire that goes to a fused 12volt power source.
I'll have to look at mine later to see which it is, as I cannot remember which one it is exactly.
But, it is very simple to install, and you can mount it where ever you want, alot of people mount them in the tail, under the passenger seat, or behind the battery box, under the driver's seat.
On Heal-Tech's website you simply select your bike, then your tire and sprocket sizes, which gives you a number, say 11.2 for example, and then you enter that number into the SpeedoHealer with a few button presses, and the instructions that come with the SpeedoHealer, and the website will tell you how to do that, which is also very simple.
Once done, check the bike's speedometer vs gps, and the speedometer should be within -1/+1 mph of what the gps says.
Given your rear tire's height, that 17/40 is stock gearing, that the overall height of a 300/35/18 is roughly and inch and a half taller than the stock 190/50/17 your gearing of 17/47 should be close to 17/44 or 17/43 with a stock tire.
17/43 is ok for highway riding too, as rpm's are only about 600 higher than 17/40.
A loud exhaust and not being used to the engine, which will be cruising around 60-65mph at the rpm's where it really wants to start making power, it can be deceptive that it feels like it's running close to redline...yet it will run very strong to past 10k rpm as it was designed.
The extra low gearing that you have is not only to account for a taller tire, to help even things out(taller tires lower your rpm's at the same speed) which would make the bike sluggish with a normal width tire that height, but in your case to overcome the extra weight of a much heavier rear wheel, and a heavier rear tire.
Which is also not dead weight, but rotating mass, as the engine has to work harder to get that heavier rear wheel and tire to the same rpm, with the speed at that rpm dependent on the gearing.
Based on how u describe it feels to u, I’d go minus 2 on the rear. It’ll still pull hard if u get on it in 6th but u won’t immediately feel like u need to shift to “7th”, and if u need it to pull any harder just downshift to 5th
I’m ripping around on 17/43 right now, it’s a fun ride but alil too high on the freeway cruising for my taste, so I find myself getting on it more than just cruising.
I’ve also ran 17/47 with a stock size tire, now that thing was screaming on the freeway at normal speed lol 6th gear burnouts were normal
I’m ripping around on 17/43 right now, it’s a fun ride but alil too high on the freeway cruising for my taste, so I find myself getting on it more than just cruising.
I’ve also ran 17/47 with a stock size tire, now that thing was screaming on the freeway at normal speed lol 6th gear burnouts were normal
but that -2 rear would be 17/38 gearing, then add in the tire height and you're at 17/34, or 17/33, plus that heavy wheel and tire...the bike will feel like a slug.
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