RCU Forums

RCU Forums (http://www.rcuniverse.com/forum/)
-   RC Airboats (http://www.rcuniverse.com/forum/rc-airboats-246/)
-   -   New plastic gasser (http://www.rcuniverse.com/forum/rc-airboats-246/6671723-new-plastic-gasser.html)

crispyspa 11-25-2007 04:41 PM

New plastic gasser
 
1 Attachment(s)
After much contemplation....I decided to make another plastic hull airboat. This design has been borrowed from Hooty301 (with blessings) and his legendary, wall climbing "Kamakazee" airboat.

44" long 20" wide and 4" deep. A poulon Wood Shark (36cc) from a previous build will be used for power.

89ram 11-25-2007 08:57 PM

RE: New plastic gasser
 
that looks pretty sweet! what sort of plastic are you using, and how are you gluing, adhereing, etc?

crispyspa 11-25-2007 10:37 PM

RE: New plastic gasser
 
1 Attachment(s)

Quote:

ORIGINAL: 89ram

that looks pretty sweet! what sort of plastic are you using, and how are you gluing, adhereing, etc?
Thanks!
I get the 1/8" ABS plastic in 4 x 8 sheets from a local company called Regal plastics . cost is around $40. I put it together using Methyl Ethyl Ketone, or MEK for short. It is a solvent normally used in painting (I think) but it melts the ABS quite readily. I also make a paste glue using the MEK and ABS scraps that is used for sealing the joints.

Weight as shown: 22 LBS. hoping to stay right around 25 LBS RTR, which will be about 10 LBS lighter than my last one. It may be heavy...but it's almost bullet proof. :)

jasperrc 11-26-2007 01:37 PM

RE: New plastic gasser
 
Can't wait to see this one finished!

crispyspa 11-27-2007 01:48 PM

RE: New plastic gasser
 
1 Attachment(s)
Did a strength test and a float test today....I will need to close up the transom. [:o] There goes the cool design.

dadkins 11-27-2007 02:09 PM

RE: New plastic gasser
 
Floats a little low huh. If you keep it going - up on plane - no problemo.
Its a shame to change that nice hull.

crispyspa 11-28-2007 03:13 AM

RE: New plastic gasser
 

Quote:

ORIGINAL: dadkins

Floats a little low huh. If you keep it going - up on plane - no problemo.
Its a shame to change that nice hull.
........I still have to add the cage, which will weigh around 3.5 LBS. yEEsh! I'll build the cage first, then close in the back if I need to.

shaunmichaeljohnson 11-28-2007 05:46 AM

RE: New plastic gasser
 
yeah try it first;)
it is a really nice build and i'm planning an ABS boat some time in the future:D
maby i'll go with the kamakaze design too[&:]:D

if it doesent sink under the cage weight then give it a go because the water WILL clear out as soon as it moves.

shaun

TERBObob 11-28-2007 07:52 AM

RE: New plastic gasser
 
Heck with closing her up ... living up in Onalsaka , that white stuff is soon to hit and stay . Keep her as is for the winter , and THEN modify if needed .
( snow runners are LOTS more fun that running on water - that is soon to be FROZEN [:o] )

dadkins 11-28-2007 09:41 AM

RE: New plastic gasser
 
1 Attachment(s)
Check out this cage - made of an old bike rim - aluminum - super light 1 lb at most. ok - Its ugly - but very functional .
Ok - it's not really a cage - but a rollbar !

asmithnc 11-28-2007 10:12 AM

RE: New plastic gasser
 
Looks like another winner from the ol' Crispy's workshop. Keep us posted on the build.

hooty301 11-29-2007 01:11 AM

RE: New plastic gasser
 
Sweet work![8D]

As far as the floating issue goes, not sure how the extra weight from the cage is going to effect it but I think it should be fine.
Id definatly try it first before you close it in.

crispyspa 11-29-2007 02:52 AM

RE: New plastic gasser
 
1 Attachment(s)
Thanks guys!
I have formulated a plan to keep the cage weight to a minimum. I think 1/4 x 1/4 square and 1/4 x 1/2 Aluminum will be the building material. It'll be much like this other cage, but with only 1 hoop and not as much bracing. BTW the one in the pic is 4 1/2 LBS.

dadkins 11-29-2007 10:08 AM

RE: New plastic gasser
 
Those must be solid sqare metal rods used to build that. Cuz MAN that seems heavy, does that include the gas tank?
Your motor doesn't mount to the cage does it?

crispyspa 11-30-2007 03:22 AM

RE: New plastic gasser
 

Quote:

ORIGINAL: dadkins

Those must be solid sqare metal rods used to build that. Cuz MAN that seems heavy, does that include the gas tank?
Your motor doesn't mount to the cage does it?
Yea...solid aluminum. It is heavy, (including gas tank) but you have to remember it was made to house an 18" prop. It was also made to withstand severe abuse.


crispyspa 12-08-2007 11:46 PM

RE: New plastic gasser
 
1 Attachment(s)

Quote:

ORIGINAL: crispyspa

Thanks guys!
I have formulated a plan to keep the cage weight to a minimum. I think 1/4 x 1/4 square and 1/4 x 1/2 Aluminum will be the building material. It'll be much like this other cage, but with only 1 hoop and not as much bracing. BTW the one in the pic is 4 1/2 LBS.
The problem with plans...? Sometimes they go right out the porthole..LOL The way I beat on my boats, I figure I may as well add the second hoop at the cost of adding 1 LB.

vamp131 12-09-2007 04:58 AM

RE: New plastic gasser
 
it it not a little top heavy how does it run in water than nice job looks very fast films be great

RS 38-40 12-09-2007 08:56 AM

RE: New plastic gasser
 
Crispyspa is there any chance you could post a couple pictures of your cage roller ? I for one would like to see it . Maybe in another thread . Us DIYers you know :)

crispyspa 12-09-2007 05:46 PM

RE: New plastic gasser
 
1 Attachment(s)

Quote:

ORIGINAL: RS 38-40

Crispyspa is there any chance you could post a couple pictures of your cage roller ? I for one would like to see it . Maybe in another thread . Us DIYers you know :)
Done. new thread started.

did some more work, but I ran out of aluminum stock. I'll have to finish later.

L_J_Engineering 12-09-2007 06:18 PM

RE: New plastic gasser
 
wheres the rudders

crispyspa 12-09-2007 06:20 PM

RE: New plastic gasser
 

Quote:

ORIGINAL: L_J_Engineering

wheres the rudders
LOL It's not finished yet.

jasperrc 12-10-2007 01:41 PM

RE: New plastic gasser
 
Looks great crispy!

crispyspa 12-29-2007 07:45 PM

RE: New plastic gasser
 
1 Attachment(s)
got a little more done, and another strength test. LOL Oh ya...L_J_ ...here's the rudders. :) EDIT: weight (without me on there) 24 Lbs.

TERBObob 12-30-2007 10:58 AM

RE: New plastic gasser
 
VERY nice ...
( seems someone is VERY handy with working with aluminum )
Now , get those foot prints mopped up and get out there and get us some video ---- LOL
Not sure about water ... but that boat SURE does look like a perfect contender for the snow .[8D]

crispyspa 12-30-2007 08:31 PM

RE: New plastic gasser
 
1 Attachment(s)
Thank you for the complement Terbo.
As far as water running.....it'll probably be like all the others, trouble turning right. WHY? I dunno. Never figured that out.

It is DONE. Except for the maiden voyage. Got done late (like 1/2 hr ago) so I didn't get the chance to run it. Finished RTR weight is 27 Lbs 3 Oz. (including full tank of gas). Tomorrow I will try to get out and shoot the vid.


All times are GMT -8. The time now is 11:17 AM.