cva 1 issues and thoughts

[chickenman242tk 266]

so recently I wanted to add a set of yellow cva shocks to my bear hawk runner ,originally when I rebuilt/restored the car it was a blitzer but as I had several I really wanted this so I used the black cva shocks and while they worked great I love original hop ups.

so I set about getting the bits for a yellow set , located the cylinders quite cheap and had some pistons and shafts in stock so I put them together and mounted them to the car ,that's when the problems started, they would bind like crazy and were useless .

after about 3 takes I think I have them spot on, the issue was the o rings, first build I used red o rings from the cva 11 shocks and they sealed fine but were way to stiff for a 2wd so I tracked down some black one thanks to beefmuffin , I rebuilt them again while they were better they were still no where near as smooth as the black cva's they were replacing.

so I took it out for a shake down today with a 2s and it was mental , problem was the shocks still!! , had a brain wave and thought about using some proper silicon o ring , all I had was a few traxxas rebuild kits and the difference was night and day , they work!!

what I think the issue is with the cva 1 shocks the inside of the cylinder where the oring sits is a lot tighter compared to the cva 11 shocks hence the binding. now they work the way they are supposed to but what is still irritating me is when I built the shocks for both my boomer and thundershot build I had no such issues but I have found they are ok being a bit slow for a 4wd where as the 2wd need fast moving fronts especially for a car like the bearhawk which is prone to understeer.

also a quick side note when building the front mini shock , the pistons need for them are a bit smaller than the rears which is a bit of a pain as the fronts are much harder to find hence why I pieced them together , the ones im currently using on the bearhawk are being borrowed from the super g im rebuilding which means I still need some pistons , I have a few ideas that im working for this so I will keep y'all posted on that.

[beefmuffin 1156]

I probably have some spare mini pistons hanging around if I dig a couple up with throw into the Madcap box.

[chickenman242tk 266]

if you do that would sweet saves me trying to grind off my finger on the bench grinder lol.

I guess no one else has had these issues? maybe I am loosing my mind I guess

[spankrjs 77]

if you do that would sweet saves me trying to grind off my finger on the bench grinder lol.

I guess no one else has had these issues? maybe I am loosing my mind I guess

When I rebuilt my original Monster Beetle, I also had the shock binding issue. I also used Traxxas shock seals, they worked well. I also had to "turn down" the OD of the shock pistons, they rubbed the inside of the shock body cylinders. After Traxxas seals, "turned down" pistons, and polished shafts, the original shocks on my original Monster Beetle work perfect

[beefmuffin 1156]

if you do that would sweet saves me trying to grind off my finger on the bench grinder lol.

I guess no one else has had these issues? maybe I am loosing my mind I guess

Don't be a baby - you have lots of fingers.

[chickenman242tk 266]

How do you know om not missing several already lol.

The traxxas seals really do work a treat ,i even used maxx shafts for the rear shocks as i found with the stock shafts i lost a bitnof clearance in the rear with the yellow lower mounts ,i guess i could of used the black ones but that would trip my ocd i think

[berman 5315]

Associated green slime.

[chickenman242tk 266]

i have some of that for my nitros but it still had no luck with it , i think it may be just an issue with the cylinders.

does tamiya do a silicon o ring , i saw a trf one but there seem to be quite a few different one about.

i also tried to polish the shafts and that made zero difference with the black o rings and was worse with the red ones.

[matman 1499]

Don't be a baby - you have lots of fingers.

"But" mr Beef ! , Do chickens have fingers

Then again , you can by chicken fingers & they are taste ..

[beefmuffin 1156]

"But" mr Beef ! , Do chickens have fingers

Then again , you can by chicken fingers & they are taste ..

Well, assuming this is an accurate representation of what Paul looks like, then yeah they have human-like fingers. You've seen Paul in person, so YOU tell US if this is accurate or not...

[matman 1499]

i have some of that for my nitros but it still had no luck with it , i think it may be just an issue with the cylinders.

does tamiya do a silicon o ring , i saw a trf one but there seem to be quite a few different one about.

i also tried to polish the shafts and that made zero difference with the black o rings and was worse with the red ones.

Use the TRF O rings , they are smooth on the TRF cars & i'm sure i had seen some one post that , They had used

TRF O rings on some shocks & that helped , In steed of the old black/red ones .

May have been on a build thread & they used them on Hi Caps ? not to sure .

Give it a go ???? ..

[matman 1499]

Well, assuming this is an accurate representation of what Paul looks like, then yeah they have human-like fingers. You've seen Paul in person, so YOU tell US if this is accurate or not...

No i have not seen Paul at all , He was busy working when i went to perth to drop of the parts .

So i dropped them off at a mates place , As he works at the hobby shop Perth RC .

So paul went there & picked them up from there . So i have not meet him .

[chickenman242tk 266]

haha i can assure you that chicken aint got nothing on me...

i wiil give the trf o ring a go on the falcon, just for giggles , after i replace the bearings ben..... i think im going to send you a set of metric verniers so you can get the sizes right lol

1050 -1150 same same eh

mat we need to organize a meet and get a few more guys together , im itching to get the bear hawk out against a few other rigs.

forgot to mention i was in your neck of the woods over christmas but i couldnt get no service so i couldnt text lol

[Thommo 1220]

mat we need to organize a meet and get a few more guys together , im itching to get the bear hawk out against a few other rigs

You know I'm in if available. Just use the Perth thread in Meetings / Events when your ready. matman can keep us in the loop on when he's across this way.

[matman 1499]

Well we could have done a run , as we have not had much of a summer of 30-40 + deg's and days of it .

I'm sure we will at some point , i'm keen . Just got a few things i'm doing at the moment . Getting ready to move

& looking to go to NZ for 10 days in March i hope .

So lets play it by ear & see how the weather is going & fit it in . Maybe end of this month ? if it's cool enough etc .

Or it may have to be April some time ?.

[beefmuffin 1156]

chicken definitely do not have ears, mat - that's insensitive.

[chickenman242tk 266]

im very sensitive about my ears.

i have a child due any tick of the clock so maybe april sounds like a plan

[Thommo 1220]

Roger that !

Good luck with the new family. I hope that one day you might get some sleep again

[chickenman242tk 266]

hey mat you jinxed us , 38 and 40 this weekend lol.

I don't sleep a geat deal now , my nearly 5 year old makes sure of that lol.

we could still look at the end of this month if y'all still keen.

back on topic , I have just received a falcon , thanks again ben, and im noticing a similar issue with the shocks so im going to try trf o rings on these bad boys and see how that works, the shocks are virtually new so I don't think its a wear issue.

[beefmuffin 1156]

the shocks are virtually new so I don't think its a wear issue.

yeah i definitely built them new from the falcon parts bags and they maybe have 5 minutes of run time. lol. yeah, i'm glad you're going to use it for its intended purpose.

[chickenman242tk 266]

once I find a receiver im going to take it out , I think im out of stock currently so it may be a while lol. body is more or less done just gotta sort out the shocks good and proper.

I may need to hit you up for another z? parts for the driver and spotties if you have,

[matman 1499]

HAHA , Yer ! I did see that it's going to be high 30's to low 40's .

You got a falcon ? Ok , ""WHY"" .. Didn't like them back in the 80's , But

have been thinking of getting one . I do have NIP F parts for the falcon .. << were not cheap

at the time & i don't know why i got them , as i don't have a falcon .. I mush have been getting some thing

else & want to fill the order ( as i hate just getting one thing ) .

Oh !! wheres the falcon pic's ??? , Postman thread ? Whats up ...

[chickenman242tk 266]

pics coming soon , just gotta do the lights and driver.

the falcon was before my time but i wanted to complete the family , falcon , several bear hawks a blitzer or 2 a stadium thunder and who could forget the blitzer beetle , which i finished last weekend.]

all i need to do now is paint and decal the thunder and sort out the falcon and then i want to get a pic of them all together.

if that f parts needs a new home i'm sure i've got some room mat....

[matman 1499]

NO!! We want pic's NOW mister .

Pic's of when you got them , postage etc & pic's building , cleaning , pulling it apart , putting it back together , new parts pic's

Old part pic's , OK we all love pic's in this forum full stop . We need our pic fix & we need it now "badly" Man it's cold , i

have the shakes , Come on , just one will do ... Not that we are all pic's junkies ..

[chickenman242tk 266]