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hpi a825 clutch bell

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Old 02-21-2007, 11:12 PM
  #1
rhm-zooom
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Default hpi a825 clutch bell

Can anyone tell me if the hpi clutchbell a825 13/18 will work on the tsunami.
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Old 02-22-2007, 02:32 AM
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Default RE: hpi a825 clutch bell

You can try thease, your best bet is to go to the tower web site and check it and there is a thread on here just for the redcat clutch problems. Give it a try that's where you will get your best info from that thread.
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Old 02-22-2007, 03:39 AM
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Default RE: hpi a825 clutch bell

Ya I know about those ones. I want to lower the gearing,and seen the 13/18 one peice clutch listed for the Tornado I think, but wanted to make sure it would work on the tsunami. I also remember reading something about the tire size and using the 13/18. Thank you for your answer and any further help .
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Old 02-22-2007, 07:36 AM
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Default RE: hpi a825 clutch bell

the tsunami and tornado have the same clutch/transmission setup. the 13/18 will work
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Old 07-28-2007, 01:58 PM
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Default RE: hpi a825 clutch bell

Did you find out any more about this. i just picked that clutchbell up and am trying to install it in my tsunami
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Old 07-28-2007, 03:25 PM
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Default RE: hpi a825 clutch bell

it works, i have it on my tsunami, you need the needle bearing and bushings for it, i have all the links posted
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Old 07-28-2007, 04:17 PM
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Default RE: hpi a825 clutch bell

i got the parts, just cant seem to make them work. i tried putting a bushing on each side of the bearing but that doesnt work. the clutchbell binds up when you tighten the screw
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Old 07-28-2007, 04:21 PM
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Default RE: hpi a825 clutch bell

you need to make a spacer to stop the screw and washer from hitting the clutch bell. if i remember you can use a 5/16 or 3/16 tension pin, cut down to size to make a spacer.
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Old 07-28-2007, 04:24 PM
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Default RE: hpi a825 clutch bell

so, your clutch bell can slide on and off once the bearings are tight? do you use a bushing on each side of the bearing?
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Old 07-28-2007, 04:30 PM
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Default RE: hpi a825 clutch bell

i used bearings instead of the bushings, you would need 3 - 5x8x2.5 bearings.

you put it washer,bushing, needle bearing, bushing (clutch bell) then washer, screw w/cut tension pin to keep a small space between the washer and screw, you will need a washer thats big enough the hold the large washer in place but not bigger than the screw head.
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Old 07-28-2007, 04:34 PM
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Default RE: hpi a825 clutch bell

oh ok. i bought the bushings you linked to in the other post "feels like trucks in second gear". My problem is the with only the needle bearing and one bushing its higher that the crank snout, so when you screw it down it binds it all up. i can see using a spacer so the screw doesnt quite tighten against the bushing that should keep it from binding, but there is nothing to keep the clutchbell from sliding off after thats done. i didnt think that would hurt anything but wasnt sure so i wanted to see how you did it. do you know what pn those bearings are, that sounds like the better way to go
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Old 07-28-2007, 04:50 PM
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Default RE: hpi a825 clutch bell

any 5x8 bearings , 3 of them and eliminate the bushings and needle bearing. The tension pin will go insitde the bushing and washer. the washer on the outside on top of the clutch bell will keep it from coming off, you will still need the tension pin snyways, even if you do go with 3 bearings.
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Old 07-28-2007, 06:36 PM
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Default RE: hpi a825 clutch bell

does your crank snout stick out close to the end of the clutchbell? Mine is resessed in a good ways
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Old 07-28-2007, 06:41 PM
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Default RE: hpi a825 clutch bell

thats why you need the tension pin cut down, it extends the shaft (snout) out past the clutch bell. then you put the big washer on to hold the clutch bell in place, you want to cut the tension pin down so it sticks out like 1/8 inch out of the clutch bell when pushed against the shaft (snout) inside the clutch bell.
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Old 07-28-2007, 08:31 PM
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Default RE: hpi a825 clutch bell

ok i see. the only thing then is that there wouldnt be very many threads from the screw into the crank, or did you use a longer screw?
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Old 07-28-2007, 08:48 PM
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Default RE: hpi a825 clutch bell

i used a longer screw i think, i did it so long ago, i dont remember. try with the original screw and see, unless you dont have the tension pin, then get a 1/4 inch longer screw.
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Old 07-29-2007, 07:53 AM
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Default RE: hpi a825 clutch bell

I used the stock screw when I did it Eddie. I just had to keep grinding the tension pin down little by little to get some treads of the allen screw going in. Then I just used locktite. It takes some patients but it will pay off in the end the 13 and 18 bell is awesome.


Later Fong[8D]


Just bought a heli yesterday charging the battery right now . Can't wait to crash it. LOL
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Old 07-29-2007, 09:52 AM
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Default RE: hpi a825 clutch bell

fong bro, what heli did you get, i hope a 4 bladed one, the 2 bladed are very hard to start flying with.
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Old 07-29-2007, 10:05 AM
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Default RE: hpi a825 clutch bell

Quote:
fong bro, what heli did you get, i hope a 4 bladed one, the 2 bladed are very hard to start flying with.
Don't know what thats got to do with a A825 clutch bell but I learned the hard way about the 2 blade after 3 sets of blades and 2 arms[] now I have more of the double blade in my shop...........the MASH is really easy to fly. Worst learning curve I had was flying one of those foam electric planes in the wind.............lol.........been flying for 46 years and never got blown into a tree from 60 feet away[X(]
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Old 07-29-2007, 10:37 AM
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Default RE: hpi a825 clutch bell

lol, yeah, i use the blade cx and pegasus as learners, then i have the blade cp and still have a very hard time flying it. I should sell them and just stick to my little picco z!!!!! I havent been to the flying field for the past couple of weeks, gonna start on a little extra with an os .10, should have it done in a few weeks, maybe[sm=spinnyeyes.gif], i have been really busy with work for the past few weeks and decided to visit upstate last weekend, i have a couple of places up there but havent been there in over a year, had to make sure everything is ok

sorry about the hijacking of the thread bro
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Old 07-29-2007, 10:53 AM
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Default RE: hpi a825 clutch bell

I just ordered in 4 shogun 3D heli's and have to build one before I sell any..........its electric but will have to compair notes.[sm=49_49.gif]

I was just teasing about the thread because it looked like it was over[&:] I would like for the 13/18 to come off of back order[&o]
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Old 07-30-2007, 12:52 PM
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Default RE: hpi a825 clutch bell

Well i went ahead and ordered the sealed bearings from tower hobbies 5x8 in a ten pack. the needle bearing needs to have a nice machined surface to funciton well, and the crank just isnt that smooth, the needle bearing really feels and sounds rough on there so im not going to chance it. once i get those, ill slide it all together and let it rip!

also, since the engine has to slide a good bit closer to the trans, does that cause any clearance problem with the stock muffler?

Thanks!
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Old 07-30-2007, 01:04 PM
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Default RE: hpi a825 clutch bell

nope, there is no problem at all, engine just needs to move a little closer
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Old 08-19-2007, 05:42 PM
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Default RE: hpi a825 clutch bell

Any chance you could post up a photo of this setup, a little confused on the tension pin? I am ordering the parts, and plan on doing it this coming weekend on my new tsunami, well after the break-in period. Thank you!
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Old 08-19-2007, 06:04 PM
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Default RE: hpi a825 clutch bell

i will take the engine out during the week and take picturs and put it in the tsunami thread
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