HT-b cam - improved version

[thony]

For those interested in bypassing the clutch switch the two outer wires on the switch connector need to be jumpered. I just cut the connector off and soldered them together. The center wire goes to the ECU and the end should be protected from shorting out.
View attachment 417

OK on my list too.

 

[RCruiser]

My list too; I even started a New Thread to keep track of things and have my stoopid questions answered...
Bob

 

[Dool]

just remember to pull the clutch every time you hit the starter. in case it is in gear or slips into gear the switch is there for a purpose

 

[sam2019]

In a few weeks there will be a new version of the HT-b available which retains the performance parameters (see Dool's dyno run) but also sports a decompressor which the current model does not have.
The opinions on the decompressor are somewhat split. Some (I for one) think the decomp is more of a curse than a help. It can fail in a way that the bike wont run (no compression) - and should the starter motor "hang" on a piston near TDC a little jiggle in any gear (even first) usually solves that problem and the bike starts on second try (at least it does with my 3 bikes all of which have the decompressor-less HT-b cam).
But it is correct that the bike will ALWAYS start on first push of the button if a decompressor is present. So choose your poison ...

 

[Sasa]

@sam2019 newer HT-b version will then be, performance-wise, on par with the current one? No improvement?

 

[RCruiser]

I spoke with Nisar about this today. He reiterated that he would be offering several Versions, but he didn't state any specifications, or comment on what they were meant for. (I had told him earlier that I wanted the CAM's performance directed at the Lower RPM range. Maybe there are others that want Highway Speeds?).

He said that they were out for Hardening and would he'd ship mine out in a week. He also said that they'd be put into a bike and tested... (Sunday he was @the Track so I know he's got access to a go fast place...).
Bob

 

[sam2019]

@sam2019 newer HT-b version will then be, performance-wise, on par with the current one? No improvement?

well, I am quite content with the improvement over the stock cam. any further improvement would likely be at the cost of low torque. but what do I know. Dool tells me it requires German technology to make a better cam. I doubt that very much. its not rocket science (I mean the machining part, the engineering part may be a different story).

 

[Sasa]

well, I am quite content with the improvement over the stock cam. any further improvement would likely be at the cost of low torque. but what do I know. Dool tells me it requires German technology to make a better cam. I doubt that very much. its not rocket science (I mean the machining part, the engineering part may be a different story).

I respectfully disagree. Not all machining shops are created equal, otherwise you'd be making precision mechanical clock in India instead of Switzerland. Anyhow, let's wait and see what these new iterations bring to the table...

 

[sam2019]

I respectfully disagree. Not all machining shops are created equal, otherwise you'd be making precision mechanical clock in India instead of Switzerland. Anyhow, let's wait and see what these new iterations bring to the table...

of course BUT as we can see in the example of the TEC cam which had obvious production flaws yet still gave good results the difference is in the design and not the execution.

 

[Dool]

the marks on the TEC Cam were caused by a part of the process and they were all ground on an everyday type of Cam grinding machine, they have the same overall look as the Hitch regrind the stock and the H-T b because they are done on that style of Cam Grinder, the "flaws" had no relevance as the Rockers employ Rollers.
Rocket science is so easy to understand I suppose, even Elon does it😁 and I'm sure he has a high IQ also, I would not take his word on the Cam but perhaps if I knew somebody who obviously knew more than me about Cams I would listen to them?

 

[RCruiser]

Well looky what I just got a picture of:

 

[sam2019]

Well looky what I just got a picture of:

no decomp?

 

[sam2019]

slot for decomp, but have to use decomp parts from oem cam

 

[sam2019]

The HT-c cam (let's call it that) has a slot for a decompressor but comes without it. People who want to keep it must take it off the stock cam and fit it to the HT-c. On top of that there should be the following changes aka improvements: (Indian English)

B type cam is modified degree to reduce vibration sound and increase more torque

I ordered 2, one of which will be put into the 500cc carby - with decomp in place.

 

[Dool]

Although not directly involved in the manufacture, I think I can say that the Cam will be the same as one I have here and have tested to good effect.
It would be the one on the far right you can see it has Duration by the size of the lobe ( its big and Fat ) now compare to the far left where the lobes are noticeably slimmer.

 

[sam2019]

I am more interested in the decomp option than any possible increase in torque. The HT-b already does well in that respect.
Some people just do not like the jiggeling of the bike that is sometimes needed without decomp.

 

[Dool]

Jiggeling, you have captured it !

Pain in the arse it is. I have, although experienced it in lower compression builds as well.

The Culprit is also the shitty starter system, but High Compression does not help.

The Decompressor is not the system I would like but to say it is proven is enough.

I would like a manual decomp

 

[Dool]

I am more interested in the decomp option than any possible increase in torque. The HT-b already does well in that respect.
Some people just do not like the jiggeling of the bike that is sometimes needed without decomp.

I remember it being said by others that "we found that it didnt need the decomp because of the duration" , I bet it is costly to make and that was a consideration at the time also, we shall see

 

[RCruiser]

Peter, I think that you're correct about the real problem with our bikes difficulty in starting, is not a Decompressor, but rather 'the shitty starter system'. The starting problem is then compounded by a Higher Compression setup. Case in point is my bike; I put in an earlier version of ONX's CAM because it had a Decompressor, but my bike still 'works' at starting, straining, just like when it had no decompressor. It has a newer battery too so it can only be a couple of issues to make it behave this way... I think. Last time I looked my compression was 210psi.

On a related note: Nisar said that he will be Installing a Decompressor onto my CAM before sending it. Now I guess that I just need to beef up my Starter Wiring like you did...
Bob

 

[Dool]

Bob the wires used are quite thin and also too long just by using a couple of eyelet terminals I cut the wires down to length and put new terminals on them.
That's helps and Im sure the Decomp does also.