Jump to content
Sign in to follow this  
futureworks

Tamiya Fuel Indicators - a question

Recommended Posts

Hi 

Tamiya produced a fuel indicator back in the 1990’s and created two variants of the same model, as pictured. One says it’s for Sanwa, the other says it’s for a Tamiya, Futaba, and KO. I’m supposing (possibly quite incorrectly) that the two versions differ in terms of the connector plug, perhaps the way it’s wired. These fit I believe between the power source for the receiver (4AA battery box) and the receiver itself. My question is that if I’m using Acoms radio gear, which fuel indicator is compatible?

I would be grateful for some enlightenment!

CC131156-1AFE-4300-AC0E-470847433587.jpeg

7D0ACB60-26DC-4A3A-BD1F-5825CEEA0760.jpeg

Share this post


Link to post
Share on other sites

I don't know anything about these devices but until the early 90s Sanwa was wired with reverse polarity in the receivers compared to other brands. So that is probably the most likely reason for the difference.

Acoms would be standard polarity like Futaba as far as I know.

Share this post


Link to post
Share on other sites
6 hours ago, sosidge said:

Acoms would be standard polarity like Futaba as far as I know.

A bit more hunting on other forums via a google search seems to suggest that the positives and negatives are reversed for Sanwa vs. Futaba, and...

1) From this forum, in 2009, a member mentioned that “Most Acoms I know still run the old sanwa wiring sequence.”

2) someone was asking if a futaba servo would work with an acoms receiver, and discovered that “the futaba servo plug must be plugged in upside down for it to work“, which suggests the polarity of the wiring is reversed between the two manufacturers.

Seems like the Sanwa fuel indicator is going to be the correct one to go with Acoms gear.

Share this post


Link to post
Share on other sites

Or the other one and you simply swap two wires (as suggested in many rc electronics manuals) :)

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×
×
  • Create New...